• Industrial Engineering and Management Systems
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• 제14권2호
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• pp.122-128
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• 2015

The purpose of this paper is to propose an appropriate evaluation scheme for improvement activities, based on a simple model comprising cash inflow by sales as well as variable and fixed cost expenditures. The paper distinguishes capacity surplus and capacity shortage situations, and examines economic benefits gained by yield increase improvement and capacity increase. The paper then proposes a basic rule of thumb for economic evaluation of improvement activities. The logic is simple but useful in practice, being conducive towards improvement activities under current economic conditions with uncertainties.

• 대한간호학회지
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• 제11권2호
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• pp.105-123
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• 1981

This study was carried out during the month of September 1976 to analyse and compare the health complaints of two groups of the university women, those who lived at home and those who lived in the university dormitory. The purpose of the study was to provide basic data required by the university health program for planning related to the health need of women students. The study sample consisted of 434 students living in the dormitory and 381 students living at home enrolled for the fall semester 1976 in a womens university in Seoul. The instrument used for the collection of data was an abridged version of a modified Cornell Medical Index. The questionarre included 35 items related to physical health complaint and 22 items related to mental health complaints. The data was treated by a computer (SPSS) using one way analysis, the Fishers' ratio and Chi-Square test at the 5％ level were used for the test for statistical significance. The interpretation of this study is limited due to the sample which was restricted to one university and not randomly selected. To guide the direction of the study, it was hypothesized that the rate of expressed health problems of students living in the dormitory would be Venter than that of students living at home. The hypothesis was tested and rejected. The following is a summary of the findings; 1. Total health (physical and mental) complaints a. There was no statistically significant difference between the home and dormitory groups with regard to total health complaints expressed. b. The rate of total complaints expressed by the home group significantly higher than dormitory group only among third year students. c. There was no statistically significant between the home and dormitory groups in their satisfaction with their economic situation. d. The home group showed a significantly higher rate of complaints related to the Nervous System compared to that of the dormitory group. 2. Physical health complaints a. Students living at home showed a significantly higher rate of physical complaints than the dormitory group. b. When the year variable was controlled, the third year was the only group which showed a different rate between home and dormitory groups; the home group presented a higher rate. c. Since the year variable seemed to affect the physical complaints those data were further analysed to see whether the specific system areas were operating as variables in each year. The results were as follow: Among the home group, First year students showed a higher rate in Family History of Disease, while the third year students more Nervous System and Cardiovascular System complaints. Among the dormitory group, only fourth year students showed a higher rate in the Skeletal-Muscular System. This was the only area the dormitory group though only for the fourth year students supported the hypothesis. d. When the economic satisfaction variable was controlled, the satisfied group was the only group which showed a different rate between home and dormitory groups; the home group presented higher rate. e. Since the economic satisfaction variable seemed to affect the physical complaints those data were further analyzed to see whether the specific system areas were operating as variables in each economic satisfaction level, but there was no statistically significant difference between home and dormitory groups. 3. Mental health complaints a. There was no significantly difference between home and dormitory groups with regard to mental health complaints expressed. b. When the year variable was controlled the third year group was the only group which showed a different rate between home and dormitory groups; the home group presented a higher rate. c. Since the year variable seemed to affect the mental complaints, those data were further analyzed to see whether the specific system areas were operatings variables in each economic satisfaction level. The result were as follows: Among the home group, the third year students showed higher rates in Inadequacy and Anxiety. d. When the economic satisfaction variable was controlled, the very satisfied group was the only group which showed a different rate between home and dormitory groups: the home group presented a higher rate. Since the economic satisfaction variable seemed to affect the mental complaints, those data were further analysed to see whether the specific system areas were operating as variables in each economic satisfaction level, but there was no statistical significant difference between the home and dormitory groups. Although the social environment of dormitory life differs from family life, there was no difference in the rate of total health problem complaints between the home and dormitory groups but the home group showed a higher rate of physical health complaints than the dormitory group. Possible positive factors influencing dormitory life and negative factors influencing family life affecting health complaints must be explored in order to relate to the health needs of the university health program. This study could not define the causes for the fewer physical complaints of dormitory students living at home. Further study of such causal factors recommended in order to provide the data needed to contribute to a more effective health program.

• 국제지역연구
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• 제15권2호
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• pp.151-173
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• 2011

본 연구의 목적은 1979년부터 2008년까지 30년 기간 동안 중국에 있어서 경제성장에 영향을 미치는 중요 요소와 요소별 기여수준을 파악하기 위한 것이다. 이를 위하여 고정효과모형과 확률효과모형을 활용하였으며, 적합모델을 선택하기 위하여 Hausman 검정을 활용하였다. 본 연구의 결과 지역금융변수(rsav)가 6개 모형에서 그리고 사회간접자본변수(rsoc)가 2개 모형에서 경제성장에 대해 부(-)의 관계를 보였으나 나머지 3개 변수는 전 모델에서 경제성장에 대해 정(+)의 관계를 보이고 있는 것으로 나타나고 있다. 그리고 노동력 변수의 영향은 서부지역과 동북지역의 경우를 제외하고는 기여율이 상당히 낮은 것으로 파악되었다. 본 연구는 중국의 1인당경제성장률에 대한 각 성장요인의 의미를 찾았는데, 전국모형의 경우 자본의 기여율이 35.9%로 나타난 반면 노동기여율은 4.7% 수준에 불과한 것으로 분석되었다. 그리고 모든 모형에서 자본(rcap)이 중국경제 성장에서 가장 중요한 요인으로 입증되었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1017-1022
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• 2004

This paper presents the conversion speed drive of the cooling tower fans from constant to variable speed. The speed of fan is adjusted using variable speed drives. Since the ambient temperature of cooling tower is varied seasonally, an economic evaluation was performed to determine the potential annual savings. The performances of the proposed technique were observed using cooling tower fans of chemical plant in Thailand as an illustrative case study. The experimental results demonstrating the energy savings fork cooling process and some economic benefits are obtained.

• 한국화재소방학회논문지
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• 제25권3호
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• pp.14-19
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• 2011

본 연구는 방화와 관련하여 방화저감에 목표를 가지고, 사회적 현상과의 관계를 밝히는 것에 중점을 가지고 연구가 실시되었다. 특히 기존의 연구와 달리 방화의 동기 중, 경제적인 동기에 주목하여 경제적지표가 방화에 어떤 영향을 미치는가에 대한 탐색적 연구를 실시하였다. 분석결과, 방화와 관련된 경제적 현상에 대한 관계를 밝혔다. 구체적인 내용으로 경제성장율, 소비자물가지수가 감소하면 전체적인 경기가 좋지 않아 방화건수가 늘어났다. 역으로 경제성장율, 소비자물가지수가 증가하면 방화건수가 감소하였다. 그리고 개인채무비율이 증가하면 방화건수도 증가하는 현상에 대해 밝혔다.

• The Journal of Asian Finance, Economics and Business
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• 제8권1호
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• pp.353-361
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• 2021

The aim of this research is to understand and analyze the ways in which the current digital financial technology is impacting on the financial payment system provided by most of the commercial banks in Indonesia. This research analyzes the variables such as perceived ease-of-use, perceived usefulness, and perceived value on customer's intention to use in relation to the variable of trust as the intervening variable. The data collection is done through distribution of questionnaire; the population of this research consisted of the commercial banking customers located in Jakarta, Indonesia. The sample determination is done through Purposive Sampling and the analysis technique is using Partial Least Square (PLS). The results show that perceived ease-of-use, perceived usefulness, and perceived value have positive and significant effect on intention to use the mobile banking system; perceived usefulness of the application has the most significant influence on intention to use compare to the perceived of ease-of-use and perceived value of the mobile banking system. The results also indicate that, even though the mobile banking system has offered several benefits to the customer, yet it was not actively used by the banking customer compared to other commercial bank's mobile banking system in Indonesia.

• 유통과학연구
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• 제10권11호
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• pp.79-88
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• 2012

Purpose - The objective of this paper is to suggest that a company's CRM activities have an effect on customer loyalty in the Korean retail industry. Typically, Korean customers use large local marts with convenience in the absence of any other choice. Therefore, this study aims to shed light on the fact that customers do not break away from their preferred retail stores, either owing to their stringent loyalty (the lie loyalty) or difficulty in turning to alternative choices. Research design, data, methodology - By surveying a sample of 200 hyper-markets through a questionnaire, and excluding dubious and missing responses, I obtained 181 samples to be included in the empirical analysis. The survey was conducted for two weeks during October 2011. AMOS and SPSS18 statistical packages were used for conducting statistical analysis for this study. This paper was developed using the concept of customer equity on CRM, which is known to have a positive impact on customer loyalty through the satisfaction and switching-barrier parameters. The hypothesis of this paper is that customer equity is composed of relationship equity, value equity and brand equity, and that the relationship equity variable has positive effects on the value equity and brand equity amongst other types of customer equity. Moreover, customer equity influences customer loyalty through parameters including customer satisfaction and switching costs in the Korean retail industry. Results - According to the results of the analysis, it was confirmed that relationship value had a positive effect (+) on all variables, including the perceived QoS (Quality of Service), store brand images, economic value, and store convenience. It was also confirmed that the assumption that the perceived QoS (Quality of Service), economic value, and store convenience had a positive effect on customer satisfaction was shown to be statistically significant, with a p-value below 0.05. Only the store brand value variable had an effect on the switching-cost variable with respect to the causal sequence of the variables, including the perceived QoS, store brand value, economic value, and store convenience. The remaining variables did not seem to influence the switching-cost variable. On the other hand, another effect showed that customer satisfaction had a statistically significant influence on the switching-costs variable. Moreover, the customer satisfaction and switching-cost variables also had a statistical influence on customer loyalty. Conclusions - The CRM activities had an influence on various variables (including perceived QoS, perceived economic value, store brand value, and store convenience) pertaining to customer values. Customer satisfaction and switching-cost had some effects on customer loyalty as a parameter. This confirms that stringent loyalty exists with respect to customer loyalty in the retail industry. The fact that the variable had such a statistically significant influence on the switching-cost and store brand equity variables means that consumers react to the reputation of a brand, confidence about the store, and quality confidence. The implications of this study in the retail industry should be further extended to devise strategies for customer retention.

• 농촌지도와개발
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• 제22권2호
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• pp.101-116
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• 2015

This study aims to identify the decision-making factors of people who have returned to rural areas for farming and residence according to personal characteristics and regions. The survey was conducted on 420 return farmers of six cities and counties in Gyeongsangbuk-Do from September 1st to October 11th 2013. For data analysis, researchers used 280 answered sheets and utilized two-way ANOVA and multinomial logistic regression analysis. Research results indicate three factors of returning to farm which are pull to rural area, push from city, and policy factor. The highest scores of factor is pull to rural area (2.93), the second one is push from city (2.31), and the lowest score is politic factor (2.18). In addition, these three factors of returning to farm are elucidated by environmental variable, economic variable, and information and opportunity provided by government. In other words, the factor of pull to rural area is related environmental variable and the factor of push from city is affected by economic variable. Lastly, politic factor pertains to information and opportunity provided by government.

• 품질경영학회지
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• 제44권4호
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• pp.751-770
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• 2016

Purpose: Two-stage ${\bar{X}}$ chart is a useful tool for process control when a surrogate variable may be used together with a performance variable. This paper extends the two-stage ${\bar{X}}$ chart to a three stage version by decomposing the first stage into the preliminary stage and the main stage. Methods: The expected cost function is derived using Markov-chain approach. The optimal designs are found for numerical examples using a genetic algorithm combined with a pattern search algorithm and compared to those of the two-stage ${\bar{X}}$ chart. Sensitivity analysis is performed to see the parameter effects. Results: The proposed design outperforms the optimal design of the two-stage ${\bar{X}}$ chart in terms of the expected cost per unit time unless the correlation between the performance and surrogate variables is modest and the shift in process mean is smallish. Conclusion: Three-stage ${\bar{X}}$ chart may be a useful alternative to the two-stage ${\bar{X}}$ chart especially when the correlation between the performance and surrogate variables is relatively high and the shift in process mean is on the small side.

• 대한산업공학회지
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• 제23권4호
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• pp.793-802
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• 1997

A sampling plan is presented for situations where sampling inspection is based on the quality characteristic of interest and items in rejected lots are screened based on a correlated variable. A cost model is constructed which involves the costs of misclassification errors, sampling and screening inspections. A method of finding optimal values of sample size, acceptance number and cutoff value on the correlated variable is presented, and numerical studies are given.